diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -359,6 +359,7 @@
 	clientversion.cpp
 	compat/glibcxx_sanity.cpp
 	compat/strnlen.cpp
+	currencyunit.cpp
 	fs.cpp
 	interfaces/handler.cpp
 	logging.cpp
diff --git a/src/bitcoin-cli.cpp b/src/bitcoin-cli.cpp
--- a/src/bitcoin-cli.cpp
+++ b/src/bitcoin-cli.cpp
@@ -9,6 +9,7 @@
 
 #include <chainparamsbase.h>
 #include <clientversion.h>
+#include <currencyunit.h>
 #include <rpc/client.h>
 #include <rpc/protocol.h>
 #include <rpc/request.h>
@@ -48,6 +49,7 @@
     const auto regtestBaseParams =
         CreateBaseChainParams(CBaseChainParams::REGTEST);
 
+    SetupCurrencyUnitOptions(argsman);
     argsman.AddArg("-version", "Print version and exit", ArgsManager::ALLOW_ANY,
                    OptionsCategory::OPTIONS);
     argsman.AddArg(
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -11,6 +11,7 @@
 #include <coins.h>
 #include <consensus/consensus.h>
 #include <core_io.h>
+#include <currencyunit.h>
 #include <key_io.h>
 #include <primitives/transaction.h>
 #include <rpc/util.h>
@@ -40,6 +41,7 @@
 static void SetupBitcoinTxArgs(ArgsManager &argsman) {
     SetupHelpOptions(argsman);
 
+    SetupCurrencyUnitOptions(argsman);
     argsman.AddArg("-create", "Create new, empty TX.", ArgsManager::ALLOW_ANY,
                    OptionsCategory::OPTIONS);
     argsman.AddArg("-json", "Select JSON output", ArgsManager::ALLOW_ANY,
diff --git a/src/bitcoin-wallet.cpp b/src/bitcoin-wallet.cpp
--- a/src/bitcoin-wallet.cpp
+++ b/src/bitcoin-wallet.cpp
@@ -8,6 +8,7 @@
 
 #include <chainparams.h>
 #include <chainparamsbase.h>
+#include <currencyunit.h>
 #include <logging.h>
 #include <util/system.h>
 #include <util/translation.h>
@@ -20,6 +21,7 @@
 static void SetupWalletToolArgs(ArgsManager &argsman) {
     SetupHelpOptions(argsman);
     SetupChainParamsBaseOptions(argsman);
+    SetupCurrencyUnitOptions(argsman);
 
     argsman.AddArg("-datadir=<dir>", "Specify data directory",
                    ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
diff --git a/src/currencyunit.h b/src/currencyunit.h
new file mode 100644
--- /dev/null
+++ b/src/currencyunit.h
@@ -0,0 +1,12 @@
+// Copyright (c) 2021 The Bitcoin Developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_CURRENCYUNIT_H
+#define BITCOIN_CURRENCYUNIT_H
+
+class ArgsManager;
+
+void SetupCurrencyUnitOptions(ArgsManager &);
+
+#endif // BITCOIN_CURRENCYUNIT_H
diff --git a/src/currencyunit.cpp b/src/currencyunit.cpp
new file mode 100644
--- /dev/null
+++ b/src/currencyunit.cpp
@@ -0,0 +1,13 @@
+// Copyright (c) 2021 The Bitcoin Developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <currencyunit.h>
+
+#include <util/system.h>
+
+void SetupCurrencyUnitOptions(ArgsManager &argsman) {
+    // whether to use eCash default unit and address prefix
+    argsman.AddArg("-ecash", "Use ecash as default unit (Default: false)",
+                   ArgsManager::ALLOW_BOOL, OptionsCategory::OPTIONS);
+}
\ No newline at end of file
diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -23,6 +23,7 @@
 #include <compat/sanity.h>
 #include <config.h>
 #include <consensus/validation.h>
+#include <currencyunit.h>
 #include <flatfile.h>
 #include <fs.h>
 #include <hash.h>
@@ -381,13 +382,11 @@
     ArgsManager &argsman = *node.args;
 
     SetupHelpOptions(argsman);
+    SetupCurrencyUnitOptions(argsman);
     // server-only for now
     argsman.AddArg("-help-debug",
                    "Print help message with debugging options and exit", false,
                    OptionsCategory::DEBUG_TEST);
-    // whether to use eCash default unit and address prefix
-    argsman.AddArg("-ecash", "Use ecash as default unit (Default: false)",
-                   ArgsManager::ALLOW_BOOL, OptionsCategory::OPTIONS);
 
     const auto defaultBaseParams =
         CreateBaseChainParams(CBaseChainParams::MAIN);